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Cold shed / garage / greenhouse?

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Get 2 old radiators connect them together in a loop with copper piping (filling everything with water)


Place one radiator in the shed / greenhouse.. and the other in your compost heap.


As long as the one in the shed is higher then the one in the compost heap, the warm water will flow from the heap to your shed warming the radiator up.


(you would be amaized at how much heat a composting pile makes)


free heating :D

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